Malicious PDF — malware analysis report

Static analysis result for SHA-256 19edac27629c79f9…

MALICIOUS

PDF

59.1 KB Created: 2020-08-30 18:57:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ad674d91bdd3864114974a15a2464c72 SHA-1: 4fb1049e367240626926b024dac7f37348caa7cf SHA-256: 19edac27629c79f994b8301d8ed1d40d7a43b30c48c608015dd992acb162cc36
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF was flagged for containing a malicious redirector link and a link farm. The primary malicious URL identified is https://ttraff.ru/wix?keyword=area+entre+curvas+ejercicios. The document body, though heavily obfuscated, contains this URL, suggesting it is the intended destination. The presence of numerous external links points towards a strategy to distribute or host malicious content indirectly.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.ru/wix?keyword=area+entre+curvas+ejercicios
    • https://static.usrfiles.com/ugd/40512e_c63ed8a843134977ab37078deae04005.pdf
    • https://static.usrfiles.com/ugd/b8c837_af6b54b025fe416da52ec83a393ae1ad.pdf
    • https://static.usrfiles.com/ugd/69b86f_0fecfb95649a4a41ba91539f2f004bec.pdf
    • https://static.usrfiles.com/ugd/b8c837_4d62489b3fa74423a75f6d633721e90f.pdf
    • https://cdn.shopify.com/s/files/1/0435/5080/2081/files/6257575311.pdf
    • https://cdn.shopify.com/s/files/1/0447/8153/5389/files/alphabet_letters_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0437/6487/5418/files/79943578348.pdf
    • https://cdn.shopify.com/s/files/1/0432/3776/9384/files/55000858179.pdf
    • https://cdn.shopify.com/s/files/1/0431/4716/5850/files/78361416962.pdf
    • https://cdn.shopify.com/s/files/1/0430/6960/4001/files/44027571116.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vuzodatusowajukekef.pdf
    • https://cdn.shopify.com/s/files/1/0435/1852/5599/files/vowikuwipasuzigopoja.pdf
    • https://cdn.shopify.com/s/files/1/0430/2022/2627/files/lerotewojofepele.pdf
    • https://cdn.shopify.com/s/files/1/0432/7427/2924/files/saudi_anti_bribery_law.pdf
    • https://cdn.shopify.com/s/files/1/0434/4994/2168/files/sunday_school_attendance_chart.pdf
    • https://cdn.shopify.com/s/files/1/0448/1653/1617/files/dxf_to_online.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009e35.bin
169afcd3ca9a36b979d0ed0d91d188bef7554178b1002cd7b4bdb26b6a97e0bb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9E35 4888 bytes
font_01_sfnt_off0000aee6.bin
e92a6ca76f0f290e706307ae1f5fecddd2ab2852b0668591e632927a30821758		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAEE6 16128 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.